WHAT IS LCD?

As its name implies, Liquid Crystal is a material composed of dense particles in solid state that appear chemically in liquid form. It can be polarized according to the applied electrical energy. The use of this material, which was found by chance in 1888, in the image transmission technology began in 1962 with the first tests in RCA Laboratories. However, the tests performed in these years failed to achieve the desired results at room temperature, but only in 1966 and finally in 1972, the first active matrix LCD Display was produced by the United States.

George Heilmeier First LCD Test 1965
Ronald Friel First LCD Demo Setup 1968
Robert Lohman First LCD Clock 1968

HOW IT’S WORK

LCD Displays work according to the principle of passive display technology. Therefore, since they cannot emit light alone, they give the image of the natural light in the environment or with the help of the backlight placed on their backwards. They are preferred in applications where energy resources are limited (measuring instruments, clocks, meters, thermostats, etc.).

LCD Displays work according to the principle of passive display technology. Therefore, since they cannot emit light alone, they give the image of the natural light in the environment or with the help of the backlight placed on their backwards. They are preferred in applications where energy resources are limited (measuring instruments, clocks, meters, thermostats, etc.).

LCD Displays consist essentially of liquid crystal material placed between two transparent glass sheets. The inner surface of the glasses has channels coated with conductive polymer to apply voltage. According to the electrical energy applied to the liquid crystal in these channels, they are aligned in a polarized linear order, or they are aligned from one spiral surface to the other surface. This spiral structure bends the light so that light can be transported between the polarizing filters positioned perpendicular to each other. When electrical energy is applied to them, they curtain the light and create the image (dark black segment) on the LCD by lining them linearly behind each other.

.

Leave a Reply

Your email address will not be published. Required fields are marked *